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by: Peter Nolan |
last post by:
Hi All,
I have some software that currently loads database tables into sorted arrays
in memory to be binary searched by processes. (Long story as to why it does
this..)
Each process must either read the data from the in memory array or from the
database itself if the table is too large to be loaded into memory. (2GB is
usually the limit because the array is indexed by a 32 bit signed integer.
I have never had one of these tables go over...
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by: Justin Lazanowski |
last post by:
Cross posting this question on the recommendation of an
I have a .NET application that I am developing in C# I am loading
information in from a dataset, and then pushing the dataset to a grid, or
other controls depending on the particular form. This application is setup
with one MDI parent calling MDI children with the exception of one Modal
form (the report viewer).
When I run the application and run one of the screens that pulls...
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by: vikas |
last post by:
I have following structure in c++.
typedef struct MMF_result_struct
{
int action;
char text;
int cols,rows;
int month,day,year;
} MMF_result;
Now this structure is shared between C++ and C# using memory mapped file. We already have C++ code for handling memory mapped file. I am working on converting code for memory mapped file in C#. Now I have to pass pointer to the above structure. I converted this structure to C# as follows:
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by: James Aguilar |
last post by:
Oh wise readers of comp.lang.python,
Lend a newbie your ears. I have read several old articles from this
group about memory mapping and interprocess communication and have
Googled the sh** out of the internet, but have not found sufficient to
answer my questions.
Suppose that I am writing a ray tracer in Python. Well, perhaps not a
ray tracer. Suppose that I am writing a ray tracer that has to update
sixty times a second (Ignore...
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by: Divick |
last post by:
Is there a way in C++ to have a file stream which is directly mapped to
memory(virtual memory) without actually having to create a file and
then memory mapping that file using system dependent calls?
I need this because I don't want to create a regular file on disk
(reasons for which are many , say directory permissions ), but being a
file pointer, someone can use that pointer as a regular file descriptor
for reading and writing.
...
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by: wakun |
last post by:
Hi there,
I am seeking a fastest way to load a BIG string and parse it as a
given format. I have a extern function which return a (char *)string in
BIG size. Now, I am going to parse it with a iterator as following
char *str = return_a_big_size_str();
istringstream ss(string(str), istringstream::in);
istreambuf_iterator<char> bit(ss), eit;
parsing(bit, eit);
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by: Carl Mackey |
last post by:
hi, i'm new to this list and new to python as well.
i have a question on the memory mapped file ability python has. when i
use a mmap on a file, will it copy the whole thing to ram or just
whatever part of it i'm working on? basically, i'm wondering if it would
be ok for me to have multiple mmap's open on very large files as i read
or write from them.
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by: Samshayam |
last post by:
I have come across the application of placement new in memory mapped
i/o in a number of books.I am not able to understand it completely, may
be becaues of my lack of knowledge with memory mapped i/o.In my
understanding it is a system where I/O devices are treated as memory
locations and are addressed using same number of address lines.How an
object placed at a specific location makes a difference to this?Some
body pls clarify?
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by: PMarino |
last post by:
I'm an old Win32 guy, so I may be completely off-base here, but is there any
support for Memory-mapped files in C#?
I'm actually trying to get around a limitation with Windows Authorization
Manager. Right now, the security information contained in AzMan is either
stored in Active Directory or an XML file. I'd like to be able to store it
in a database, and populate a memory-mapped file (or it's equivalent) from
the DB when the file is...
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by: Clement |
last post by:
Can i place variables or arrays in Disk instead of main memory........
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
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Your website is...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
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